These hunched-backed fish are one of the few double tail fancy goldfish breeds that do well in ponds and as companions for single-tails! Ryukin prefers warmer water than the others in this part of the list (from 65 to 78F) and are usually smaller, too.
Goldfish are one of the most popular types of pet fish and for a good reason! Theyre relatively easy to care for, come in a wide variety of colors and shapes, and can live for a long time (10-15 years is not uncommon). But what about goldfish tank mates? What other kinds of fish can live in a tank with goldfish without causing any problems?

The type of tank mate you choose depends on your goldfishs conditions. We dive into the different types of companions and why they're great friends for goldfish.

Such details provide a deeper understanding and appreciation for Goldfish Companion Fish For Small Water Volume Tanks.
Incompatible Tank Mates: Tropical fish of all kinds, Tiger Barbs, Red-Tailed Sharks, Cichlids, Neon Tetras, small shrimp, Common Plecos (large), Bettas, Guppies, Mollies. Final Thoughts Goldfish can absolutely thrive in a community tank but the community must be chosen carefully. Temperature compatibility is non-negotiable.
Tank Mates For Fancy Goldfish. Fancy goldfish come in many different varieties, and their requirements tend to vary between types. However, generally, these colorful fish prefer warmer water and a very low flow rate, which gives you lots of options for companions.